"Jon O'Rourke" wrote in message
...
Do you know when the issues times will be and at what frequency, e.g.
will
the 9 hour TAFs be issued every 3 hours and 18/30 hour TAFs every 6 ?


The 30hr TAFs
Issued 2300 Valid 0000-0600
Issued 0500 Valid 0600-1200
Issued 1100 Valid 1200-1800
Issued 1700 Valid 1800-0000

TAFs with a validity period of less than 12 hours will be updated every 3
hours, while those of 12 hours or more every 6 hours.

Phil